/*
 * Copyright 2025 Apollo Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */
package com.ctrip.framework.apollo.configservice.service;

import com.ctrip.framework.apollo.biz.config.BizConfig;
import com.ctrip.framework.apollo.biz.entity.ReleaseMessage;
import com.ctrip.framework.apollo.biz.message.Topics;
import com.ctrip.framework.apollo.biz.repository.ReleaseMessageRepository;
import com.google.common.collect.Lists;
import com.google.common.collect.Sets;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.mockito.junit.MockitoJUnitRunner;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.Set;
import java.util.concurrent.TimeUnit;

import static org.awaitility.Awaitility.await;
import static org.junit.Assert.*;
import static org.mockito.Mockito.*;

/**
 * @author Jason Song(song_s@ctrip.com)
 */
@RunWith(MockitoJUnitRunner.class)
public class ReleaseMessageServiceWithCacheTest {

  private ReleaseMessageServiceWithCache releaseMessageServiceWithCache;

  @Mock
  private ReleaseMessageRepository releaseMessageRepository;

  @Mock
  private BizConfig bizConfig;

  private int scanInterval;

  private TimeUnit scanIntervalTimeUnit;

  @Before

  public void setUp() throws Exception {
    releaseMessageServiceWithCache =
        new ReleaseMessageServiceWithCache(releaseMessageRepository, bizConfig);

    scanInterval = 10;
    scanIntervalTimeUnit = TimeUnit.MILLISECONDS;
    when(bizConfig.releaseMessageCacheScanInterval()).thenReturn(scanInterval);
    when(bizConfig.releaseMessageCacheScanIntervalTimeUnit()).thenReturn(scanIntervalTimeUnit);
  }

  @Test
  public void testWhenNoReleaseMessages() throws Exception {
    when(releaseMessageRepository.findFirst500ByIdGreaterThanOrderByIdAsc(0L)).thenReturn
        (Collections.emptyList());

    releaseMessageServiceWithCache.afterPropertiesSet();

    String someMessage = "someMessage";
    String anotherMessage = "anotherMessage";
    Set<String> messages = Sets.newHashSet(someMessage, anotherMessage);

    assertNull(releaseMessageServiceWithCache.findLatestReleaseMessageForMessages(messages));
    assertTrue(releaseMessageServiceWithCache.findLatestReleaseMessagesGroupByMessages(messages)
        .isEmpty());
  }

  @Test
  public void testWhenHasReleaseMsgAndHasRepeatMsg() throws Exception {
    String someMsgContent = "msg1";
    ReleaseMessage someMsg = assembleReleaseMsg(1, someMsgContent);
    String anotherMsgContent = "msg2";
    ReleaseMessage anotherMsg = assembleReleaseMsg(2, anotherMsgContent);
    ReleaseMessage anotherRepeatMsg = assembleReleaseMsg(3, anotherMsgContent);

    when(releaseMessageRepository.findFirst500ByIdGreaterThanOrderByIdAsc(0L))
        .thenReturn(Arrays.asList(someMsg, anotherMsg, anotherRepeatMsg));

    releaseMessageServiceWithCache.afterPropertiesSet();

    verify(bizConfig).releaseMessageCacheScanInterval();

    ReleaseMessage latestReleaseMsg = releaseMessageServiceWithCache
        .findLatestReleaseMessageForMessages(Sets.newHashSet(someMsgContent, anotherMsgContent));

    assertNotNull(latestReleaseMsg);
    assertEquals(3, latestReleaseMsg.getId());
    assertEquals(anotherMsgContent, latestReleaseMsg.getMessage());

    List<ReleaseMessage> latestReleaseMsgGroupByMsgContent =
        releaseMessageServiceWithCache.findLatestReleaseMessagesGroupByMessages(
            Sets.newLinkedHashSet(Arrays.asList(someMsgContent, anotherMsgContent)));

    assertEquals(2, latestReleaseMsgGroupByMsgContent.size());
    assertEquals(3, latestReleaseMsgGroupByMsgContent.get(1).getId());
    assertEquals(anotherMsgContent, latestReleaseMsgGroupByMsgContent.get(1).getMessage());
    assertEquals(1, latestReleaseMsgGroupByMsgContent.get(0).getId());
    assertEquals(someMsgContent, latestReleaseMsgGroupByMsgContent.get(0).getMessage());

  }

  @Test
  public void testWhenReleaseMsgSizeBiggerThan500() throws Exception {
    String someMsgContent = "msg1";
    List<ReleaseMessage> firstBatchReleaseMsg = new ArrayList<>(500);
    for (int i = 0; i < 500; i++) {
      firstBatchReleaseMsg.add(assembleReleaseMsg(i + 1, someMsgContent));
    }

    String antherMsgContent = "msg2";
    ReleaseMessage antherMsg = assembleReleaseMsg(501, antherMsgContent);

    when(releaseMessageRepository.findFirst500ByIdGreaterThanOrderByIdAsc(0L))
        .thenReturn(firstBatchReleaseMsg);
    when(releaseMessageRepository.findFirst500ByIdGreaterThanOrderByIdAsc(500L))
        .thenReturn(Collections.singletonList(antherMsg));

    releaseMessageServiceWithCache.afterPropertiesSet();

    verify(releaseMessageRepository, times(1)).findFirst500ByIdGreaterThanOrderByIdAsc(500L);

    ReleaseMessage latestReleaseMsg = releaseMessageServiceWithCache
        .findLatestReleaseMessageForMessages(Sets.newHashSet(someMsgContent, antherMsgContent));

    assertNotNull(latestReleaseMsg);
    assertEquals(501, latestReleaseMsg.getId());
    assertEquals(antherMsgContent, latestReleaseMsg.getMessage());

    List<String> msgContentList = Arrays.asList(someMsgContent, antherMsgContent);
    List<ReleaseMessage> latestReleaseMsgGroupByMsgContent = releaseMessageServiceWithCache
        .findLatestReleaseMessagesGroupByMessages(Sets.newLinkedHashSet(msgContentList));

    assertEquals(2, latestReleaseMsgGroupByMsgContent.size());
    assertEquals(500, latestReleaseMsgGroupByMsgContent.get(0).getId());
    assertEquals(501, latestReleaseMsgGroupByMsgContent.get(1).getId());
  }

  @Test
  public void testNewReleaseMessagesBeforeHandleMessage() throws Exception {
    String someMessageContent = "someMessage";
    long someMessageId = 1;
    ReleaseMessage someMessage = assembleReleaseMsg(someMessageId, someMessageContent);

    when(releaseMessageRepository.findFirst500ByIdGreaterThanOrderByIdAsc(0L))
        .thenReturn(Lists.newArrayList(someMessage));

    releaseMessageServiceWithCache.afterPropertiesSet();

    ReleaseMessage latestReleaseMsg = releaseMessageServiceWithCache
        .findLatestReleaseMessageForMessages(Sets.newHashSet(someMessageContent));

    List<ReleaseMessage> latestReleaseMsgGroupByMsgContent = releaseMessageServiceWithCache
        .findLatestReleaseMessagesGroupByMessages(Sets.newHashSet(someMessageContent));

    assertEquals(someMessageId, latestReleaseMsg.getId());
    assertEquals(someMessageContent, latestReleaseMsg.getMessage());
    assertEquals(latestReleaseMsg, latestReleaseMsgGroupByMsgContent.get(0));

    long newMessageId = 2;
    ReleaseMessage newMessage = assembleReleaseMsg(newMessageId, someMessageContent);

    when(releaseMessageRepository.findFirst500ByIdGreaterThanOrderByIdAsc(someMessageId))
        .thenReturn(Lists.newArrayList(newMessage));

    await().atMost(scanInterval * 500, scanIntervalTimeUnit).untilAsserted(() -> {
      ReleaseMessage newLatestReleaseMsg = releaseMessageServiceWithCache
          .findLatestReleaseMessageForMessages(Sets.newHashSet(someMessageContent));

      List<ReleaseMessage> newLatestReleaseMsgGroupByMsgContent = releaseMessageServiceWithCache
          .findLatestReleaseMessagesGroupByMessages(Sets.newHashSet(someMessageContent));

      assertEquals(newMessageId, newLatestReleaseMsg.getId());
      assertEquals(someMessageContent, newLatestReleaseMsg.getMessage());
      assertEquals(newLatestReleaseMsg, newLatestReleaseMsgGroupByMsgContent.get(0));
    });
  }

  @Test
  public void testNewReleasesWithHandleMessage() throws Exception {
    String someMessageContent = "someMessage";
    long someMessageId = 1;
    ReleaseMessage someMessage = assembleReleaseMsg(someMessageId, someMessageContent);

    when(releaseMessageRepository.findFirst500ByIdGreaterThanOrderByIdAsc(0L))
        .thenReturn(Lists.newArrayList(someMessage));

    releaseMessageServiceWithCache.afterPropertiesSet();

    ReleaseMessage latestReleaseMsg = releaseMessageServiceWithCache
        .findLatestReleaseMessageForMessages(Sets.newHashSet(someMessageContent));

    List<ReleaseMessage> latestReleaseMsgGroupByMsgContent = releaseMessageServiceWithCache
        .findLatestReleaseMessagesGroupByMessages(Sets.newHashSet(someMessageContent));

    assertEquals(someMessageId, latestReleaseMsg.getId());
    assertEquals(someMessageContent, latestReleaseMsg.getMessage());
    assertEquals(latestReleaseMsg, latestReleaseMsgGroupByMsgContent.get(0));

    long newMessageId = 2;
    ReleaseMessage newMessage = assembleReleaseMsg(newMessageId, someMessageContent);

    releaseMessageServiceWithCache.handleMessage(newMessage, Topics.APOLLO_RELEASE_TOPIC);

    ReleaseMessage newLatestReleaseMsg = releaseMessageServiceWithCache
        .findLatestReleaseMessageForMessages(Sets.newHashSet(someMessageContent));

    List<ReleaseMessage> newLatestReleaseMsgGroupByMsgContent = releaseMessageServiceWithCache
        .findLatestReleaseMessagesGroupByMessages(Sets.newHashSet(someMessageContent));

    assertEquals(newMessageId, newLatestReleaseMsg.getId());
    assertEquals(someMessageContent, newLatestReleaseMsg.getMessage());
    assertEquals(newLatestReleaseMsg, newLatestReleaseMsgGroupByMsgContent.get(0));
  }

  private ReleaseMessage assembleReleaseMsg(long id, String msgContent) {

    ReleaseMessage msg = new ReleaseMessage(msgContent);
    msg.setId(id);

    return msg;
  }
}
